Efi 5.0 in volvo need wiring assistance for ac system

dastang2

Active Member
Dec 11, 2003
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Hello all, been quite some time since I've been here. I've been working on an 86 volvo with a 5.0 efi swap. I'm trying to get the ac wiring done. On the wot cut out relay, which pin should go to the compressor. I found the black and yellow wire from pin 10 on the ecm that goes to the relay, I have to run a wire from that wire to the low pressure switch too. I'm just confused about the wire that goes to the compressor. It's black and yellow as well I believe but there isn't another black and yellow wire coming from the wot relay. If I knew what pin it is on that relay I could run a wire to the compressor and get this thing going.
 
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